1111210020221 has 4 divisors (see below), whose sum is σ = 1269954308832. Its totient is φ = 952465731612.

The previous prime is 1111210020211. The next prime is 1111210020247. The reversal of 1111210020221 is 1220200121111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1111210020221 - 2¹⁰ = 1111210019197 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1111210020196 and 1111210020205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111210020211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79372144295 + ... + 79372144308.

It is an arithmetic number, because the mean of its divisors is an integer number (317488577208).

Almost surely, 2^{1111210020221} is an apocalyptic number.

It is an amenable number.

1111210020221 is a deficient number, since it is larger than the sum of its proper divisors (158744288611).

1111210020221 is an equidigital number, since it uses as much as digits as its factorization.

1111210020221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158744288610.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1111210020221 its reverse (1220200121111), we get a palindrome (2331410141332).

The spelling of 1111210020221 in words is "one trillion, one hundred eleven billion, two hundred ten million, twenty thousand, two hundred twenty-one".